Machine foe cutting scrolls on ends of baes



(Nb Model.) 2 Sheets-Sheet 1.

J. KOEN. MACHINE FOR'GUTTING SGROLLS 0N ENDS OF BARS.

Patented Feb. 21, 1888.

' INVENTUR WITNESSES I M Z-AA/j MM ATTORNEYS.

(N0 Mode1.) 2 sheets Sheet 2. J. KOEN.

MACHINE FOR CUTTING SORULLS ON ENDS'OF BARS. 1% 378,168. PatentdAPeb.21, 1888.

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INVENTDB ATTDBNEYS N PETERS PhuloUtMgn-phar. Washington. ac.

UNITED STATES PATENT EticE.

J OSEPII KOEN, OF ONEIDA, NEW YORK, ASSIGNOR OF ONE-HALF TO J HERBERTKENNEDY, OF SAME PLACE.

MACHINE FOR CUTTING SCROLLS ON ENDS OF BARS.

SPECIFICATION forming part of Letters Patent No. 378,168, dated February21, 1888.

Application filed August 19, 1887. Serial No. 247,345. (No model.)

To all whom, it may concern:

Bcit known that I, JOSEPH KOEN,of Oneida, in the county of Madison, inthe State of New York, have invented new and useful Improvements inMachines l'or Outting Scrolls on Ends of Bars, of which the following,taken in connection with the accompanying drawings, is a full, clear,and exact description.

This invention relates more particularly to the forming of the usualornamental tips on the ends of side bars, head blocks, springbars, andcross-bars of spring-vehicles, said ornamentation usually consisting ofscrolls cut in the sides of the end portions of the bars, which scrollshave hitherto been cut by hand tools and required skilled and expensivelabor and considerable time in performing said work.

My invention consists in a novel construction of a machine by means ofwhich the aforesaid scrolls can be cut on the ends of bars veryexpeditiously, accurately, and uniformly,and without the employment ofskilled labor, all as hereinafter fully described,and specifically setforth in the claims.

In the (lrawi1igs,Figure 1 is atop plan View of a machine embodying myinvention. Fig. 2 is an end view of the same. Fig. 3 is afront elevationwith one end of the carrying-arms and clamps removed. Fig. 4 is anenlarged top plan view of one set of cutters with the bar-carrying armand bar-clamps. Fig. 5 is a vertical transverse section on the line :0a, Fig. 4-; and Figs. 6 and 7 are respectively side and plan views of atip formed by my machine.

Similar letters'of reference indicate corresponding parts.

A represents the main supporting-frame, which may be of any suitableform to receive and properly carry the mechanism of the ma chine, whichis as follows:

In suitable boxes or bearingsfl I, rigidly attached to the top of theframe A, is journaled an arbor, F, to each end of which I secure a setof cutters, c c, the two sets being disposed reverse from each other.The shape of the cutters nccessaril y varies according to thecrosssectional shape of the tips to be formed on the bars. For formingthe tips of the shape at present in vogue, I make the cutter cotcylindrical form and the cutter c of V shape. A pulley, 1?, is securedto the arbor F,to be connected with a driving-pulley by a belt whichtransmits rotary motion to the arbor. Under each end of the arbor is abracket, H, which is connected to a rigid vertical plate, L,on the frameA by means of bolts 1' 'r, projecting from the plate L, and throughvertical slots 1* r in the vertical wall of the bracket, and providedwith nuts on their ends. By loosening the nuts the bracket H can beraised or lowered to carry the superincumbent bar-carrier G a greater orless distance from the cutters c c. A screw, N, passes verticallythrough a screwthrcaded eye in a horizontal projection, L,on the foot ofthe plate L, and the upper end of said screw engages the base of thebracket H. By turning this screw the bracket can be raised or lowered,as aforesaid, and by tightening the nuts of the bolts r r the bracket isheld against the plate L. The bracket is provided with vertical flanges,by which it embraces the vertical edges of the plate L,and is thusguided and sustained laterally in its position. On the bracket H isfirmly secured the table T, which is provided on its top with a hub, O,arranged in front of the end of the arbor Rand having an eye extendingthrough it vertically, or at right angles to the arbor. On the top ofthe hub O rides one end of the arm 0, designed to carry the bar to beoperated on. Said arm is pivoted on the upper end of a pin, a, which isaxially at right an gles to the arbor F, and passes vertically through alongitudinal slot, 1), in the arin,and through the eye of the hub O,andprojects some distance below the tableT, and is provided on its upperend with a head, by which it bears on top of the arm 0, and has itslower end screw-threaded and provided with a nut, between which and theunder side of the table is aspiral spring, a, surrounding the pin andserving to draw the pin down, so as to hold the arm G upon the hub O,the nut on the pin a permitting of adjusting the tension of the springby running the not up or down on the pin, as may be desired. ThearmGbeing pivoted on the pin a, passing through the slot b, allows said armto swing laterally toward and from a line parallel with the axis of thecutters c c, and also to reciprocate longitudinally toward and from thecutters.

To control the arm 0 in its reciprocating movement, I provide the tableT with a sta tionary guide, B, curved eccentrically in relation to thepivot-pin a, and to the arm 0, I pivot a co-operating guide, B, whichslides on the stationary guide and engages the longitudinal edgesthereof, so as to compel the pivoted guide to follow the contour of thestationary guide during the swinging movement of the arm 0, and thussaid arm receives a reciprocating movement toward and from theperipheries of the cutters 0 c. The swinging movement of the arms islimited by stops k k, adj ustably secured to the stationary guide B. Theend of the arm 0 adjacent to the hub O is formed with a cam, p, on itsunder side, said cam being caused to slide on and off from the top ofthe hub 0 during the movement of the arm 0, and thereby raises andlowers said arm so as to cause the cutters c c to cut a uniform depth inthe tapering end portion of the bar carried on the arm 0, as representedin Figs. 1 and t of the drawings. On the aforesaid end of the arm 0 issecured an abutment, h, against which rests the ends of the bar operatedon. Said abutment I make adjustable in its position by mounting itmovably on the arm and providing it with a tongue, which passes throughtheslot b and is held adj ustabl y therein by aset-screw, s, passingthrough one side of the arm and abutting against the side of saidtongue. The abutment is further sustained in its adjusted position by aset-screw, m, extending through a screw-threaded eye in a shoulder, m,on the end of the arm 0. The aforesaid abutment h, I form of wood, forthe purpose of obviating injury to the cutters c o by contact of theabutment with said cutters, and in order to afford a proper bearing forthe end of the setscrew m, I insert in the abutment a metallic bolt, Z,provided with ahead, Z.

To the top of the carrier-arm O is secured a breast, D, against which tohold sidewise the bar to be operated on. In order to permit of thevarying location of the scrolls to be cut on the ends of the bar, I makethe breast D adjustable laterally toward and from parallelism with thelongitudinal center of the carrier-arm O, by providing said arm withsegmental slots e e, and fastening the breast on the arm 0 by boltspassing throughsaid slots. The bar to be operated on I hold against thebreast D by means of a clamp consisting of a grip, f, slidingtransversely in said breast and connected to a manipulating-lever, g,pivoted in a suitar ble manner on the breast D.

In operating the described machine arm 0 is first swung toward the endof the guide B which is most remote from the pivot-pin a. Then the barto be operated on is placed on the said arm in a position to presentupward the side of the bar in which the scrolls are tobe cut, the barbeing made to abut with its end against the abutment h and clampedagainst the side ofthe breast D by the grip f, and

then swinging the arm Ov around toward the end of the guide B nearestthe pivot-pin a,the cutters c c arecaused to cut first a sharplycurvedscroll with a gradually-reduced curvature extending the bar to thedesired distance from the end thereof, the curvature being reduced, asaforesaid, by the sharper curved end of the guide B crowding the arm 0endwlse toward the cutters c o. By mounting a set of cutters c c on eachend of the arbor F and connecting to the frame A two tables, T T,equipped with two carrier-arms O 0, arranged movably toward and from therespective sets of cutters, in the manner before described, the work ofcutting the scrolls on the ends of the bars is greatly expedited,inasmuch as a man attending one end of the machine can cut the scrollson one side of each end of the bar and then pass it to a man attendingthe opposite end of the machine, where the scrolls are cut on theunfinished sides of the bar.

Having described myinvention, what I claim is- 1. In a machine forcutting scrolls on the ends of bars, the combination of a rotary arbormounted in fixed bearings, cutters secured to said arbor, a bar-carriermounted on a pivot axially at right angles to the arbor and arrangedmovably longitudinally toward and from the cutters,and a curvedstationary guide arranged eccentric in relation to the aforesaid pivotto control the bar-carrier in its reciprocating movement, substantiallyas set forth.

2. In combination with the rotary cutters o 0, the pivot-pin a, at rightangles to the axis of the cutters, the eccentric guide B, thecarrier-arm 0, provided with the slot 1), and connected thereby to thepivot-pin a,and the guide B, pivoted on the arm 0 and sliding on theguide B, substantially as described and shown.

3. In combination with the table T and rotary cutters c c, the pivot-pina,at right angles to the axis of thecutters, the carrier-arm 0;.swinging on said pivot-pin, the breast D on said arm, and the clamp forholding the bar to be operated on against said breast, substantially asset forth.

4. In combination with the rotary cutters c c, the pivot-pin a, at rightangles to the axis IIO of the cutters, the carrier-arm 0, provided withthe slot 1) and connected thereby to the aforesaid pivot-pin, thestationary eccentric guide B, the guide B on the arm 0, sliding on thestationary guide, and a clamp on said arm for holding the bar to beoperated on, substantially as described and shown. a

5. In combination with the rotary cutters c c, the pivot-pin a,at rightangles to the axis of the cutters,the carrier-arm O, swinging on saidpivot-pin, and the bar supporting breast D, secured adj ustably in itslineal position on the arm 0 to and from parallelism with thelongitudinal center thereof, substantially as and for the purpose setforth.

6. In combination with the rotary cutters c c, the pivotpin a, atrightangles to the axis of the cutters, the carrier-arm O, swinging onsaid pivot-pin and provided with the segmental slots e e, and the breastD, connected to the arm C by bolts passing through the aforesaid slots,substantially as described and shown.

7. In combination with the rotary cutters 0 c, the table T,supported adjustably vertically, the pivot-pin (1, arranged on said table at a pointin front of the cutters, the arm 0, swinging on said pivotpin, thebreast D, connected to said arm, and a clamp for holding on the breastthe bar to be operated on, substantially as set forth and shown.

8. In combination with the rotary cutters c c, the pivoted arm G, thebreast D, the grip f, sliding transversely in said breast, and thelevery, connected with the grip, substantially as and for the purposeshown and set forth.

9. In combination with the cutters c c, the pivoted arm 0, the abutmenth, secured to the arm at one end,and a clamp connected to the oppositeend of the arm for holding thereon the bar to be operated on,substantially as set forth.

10. In combination with the cutters c c, the pivoted arm 0, abutment 71,connected to one end of said arm adj ustably toward and from the pivotof the arm, and the breast D, connected to the opposite end of the arm'adjustable to and from parallelism with the longitudinal center of saidarm, substantially as described and shown.

11. In combination with the cuttersc c, the

table '1, supported adjustably vertically, the arm 0, pivoted on saidtable and provided with the slot 1), the abutment h, composed of woodand sliding in said slot, the metal bolt 1, secured to the abutment andprovided with the head Z, and the set-screw m, bearing on said head,substantially as described and shown.

12. In combination with the cutters c 0', the table T, provided with thehub O, the pivotpin a, arranged movabl y longitudinally in said hub, thespring a, arranged to resist the movement of said pin, and the arm 0,connected to the pivot-pin and provided with the earn 1), substantiallyas described and shown.

13. In a machine for cutting scrolls on the ends of bars, thecombination of a rotary arbor, the cylindrical cutter c, with the\I-shaped cutter c in front thereof mounted on said arbor, thecarrier-arm O, swinging on a pivot arranged axially at right angles tothe arbor, and a clamp on said arm for holding thereon the bar to beoperated on, substantially as described and shown.

In testimony whereof I have hereunto signed my name and afiixed my seal,in the presence of two attesting witnesses, at Syracuse, in the countyof ()nondaga,in the State ofNew York, this 20th day of June, 1887.

JOSEPH KOEN. [n s] W'itnesses:

H. P. DENISON, G. BENDIXON.

